As a Yoshimitsu main since Soul Calibur 2/Tekken 4, I'm a little bit disappointed that he's the worst character (or one of) in the game, according to the tier list. Then again, TR4Q, YOLO, other random abbreviations to fit the mood, etc;
http://www.screwattack.com/news/street-fighter-x-tekken-early-tier-list-japanFrom my experience, it's not so much that he's bad as a character, but switch cancels nonwithstanding, there's not a whole lot he can do to damage opponents once getting in on them, aside from basic juggles off of his SRK and comboing into and out of his Poison Breath. That being said, he's an excellent troll character. Whirliblade/swordmill/vaccuum's pretty useful for keeping people out, but that's not my style. Anybody else find Law to be a good character?